root/Source/core/animation/AnimatableVisibility.cpp

DEFINITIONS

1. usesDefaultInterpolationWith
2. interpolateTo
3. equalTo

/*
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#include "config.h"
#include "core/animation/AnimatableVisibility.h"

namespace WebCore {

bool AnimatableVisibility::usesDefaultInterpolationWith(const AnimatableValue* value) const
{
    EVisibility from = m_visibility;
    EVisibility to = toAnimatableVisibility(value)->m_visibility;
    return from != VISIBLE && to != VISIBLE;
}

PassRefPtrWillBeRawPtr<AnimatableValue> AnimatableVisibility::interpolateTo(const AnimatableValue* value, double fraction) const
{
    EVisibility from = m_visibility;
    EVisibility to = toAnimatableVisibility(value)->m_visibility;
    if (from != VISIBLE && to != VISIBLE)
        return defaultInterpolateTo(this, value, fraction);
    if (fraction <= 0)
        return takeConstRef(this);
    if (fraction >= 1)
        return takeConstRef(value);
    return takeConstRef(from == VISIBLE ? this : value);
}

bool AnimatableVisibility::equalTo(const AnimatableValue* value) const
{
    return m_visibility == toAnimatableVisibility(value)->m_visibility;
}

} // namespace WebCore